I have a Dell Inspiron 15R n5010 and the hard drive failed a few months ago. I replaced it and soon after the RAM wouldn't work. I ordered 2x4Gb modules
"CT2293345 CT51264BF160B.C16FER2 UPGRADE FOR A DELL INSPIRON N5010 SYSTEM" to replace the broken (as far as i know from internet research) 2x2GB modules. After replacing, i still had the same issue, balck screen and then 4 beeps repeating. I really have no idea what to do now, return the Crucial RAM and buy others or something else. Any advice would be great.